University of Oulu

K. -H. Ngo, N. T. Nguyen, T. Q. Dinh, T. -M. Hoang and M. Juntti, "Low-Latency and Secure Computation Offloading Assisted by Hybrid Relay-Reflecting Intelligent Surface," 2021 International Conference on Advanced Technologies for Communications (ATC), 2021, pp. 306-311, doi: 10.1109/ATC52653.2021.9598322.

Low-latency and secure computation offloading assisted by hybrid relay-reflecting intelligent surface

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Author: Ngo, Khac-Hoang1; Nguyen, Nhan Thanh2; Dinh, Thinh Quang3;
Organizations: 1Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden
2Centre for Wireless Communications, University of Oulu, Finland
3Center of Excellence for Wearables Research and Development, Fossil Group, Inc, Vietnam
4Posts and Telecommunications Institute of Technology, Hanoi, Vietnam
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.9 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2023-01-09


Recently, the hybrid relay-reflecting intelligent surface (HRRIS) has been introduced as a spectral- and energy-efficient architecture to assist wireless communication systems. In the HRRIS, a single or few active relay elements are deployed along with a large number of passive reflecting elements, allowing it to not only reflect but also amplify the incident signals. In this work, we investigate the potential of the HRRIS in aiding the computation offloading in a single-user mobile edge computing system. The objective is to minimize the offloading latency while ensuring the secrecy of user data against a malicious eavesdropper. We develop efficient solutions to this latency minimization problem based on alternating optimization. Through numerical results, we show that the deployment of the HRRIS can result in a considerable reduction in latency. Furthermore, the latency reduction gain offered by the HRRIS is much more significant than that of the conventional reconfigurable intelligent surface (RIS).

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Series: International Conference on Advanced Technologies for Communications
ISSN: 2162-1020
ISSN-E: 2162-1039
ISSN-L: 2162-1020
ISBN: 978-1-6654-3379-2
ISBN Print: 978-1-6654-3380-8
Pages: 306 - 311
DOI: 10.1109/ATC52653.2021.9598322
Host publication: 2021 International Conference on Advanced Technologies for Communications, ATC 2021
Host publication editor: Bao, Vo Nguyen Quoc
Conference: International Conference on Advanced Technologies for Communications
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 101022113.
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